Green Rock Energy Limited
Annual General Meeting
Adrian Larking, Managing Director
26 November 2007
Disclaimer
 The information contained herein must be treated as confidential by
the intended recipient. This document must not be passed onto any
person without written permission from Green Rock Energy Limited.
 Green Rock Energy Limited has taken reasonable care in producing
the text and images contained in this presentation but does not
warrant that the information contained herein is accurate or up to date.
 The information on these slides is based on publicly available
information, internal data and information from other sources. It is not
intended to give investment or other advice to anyone and the
information is not a substitute for detailed investigation or analysis.
 Green Rock Energy Limited will not be responsible for any loss or
damage (direct or indirect, consequential or otherwise) resulting from
the use of information provided in this presentation.
Slide 2
Green Rock Energy Ltd
- Corporate Overview
 Australian company, listed on Australian Stock Exchange
(code “GRK”)
 Market Capitalisation:
– A$19.2 million
 Options
– 40 million options
– 10 cents (April 2008)
 Shareholders
– 2,200
– Top 20 (34%)
– Directors (7%)
Slide 3
Green Rock Energy Ltd
- Business Overview
 Developer of commercial geothermal energy projects
 Long life resources supplying long life markets
 Australian Geothermal Projects (100% interest)
 Hungarian Projects (32% interest)
Slide 4
Geothermal Energy
- Recovering the Earth’s Natural Heat
1.
Hot Water
– in natural reservoirs
– known as “Conventional ” or “Hydrothermal” systems
Hot Rocks (EGS)
2.
– Hot Dry Rocks
Slide 5
Geothermal Resources
Slide 6
Geothermal Energy
- Why geothermal energy?
Conventional Geothermal Energy technology is well proven
Advantages of Geothermal Energy







Varied uses – electricity, direct heat applications
Renewable energy – access to carbon credits
Domestic source of energy
Base load, long life, power source – high availability >95%
50,000 times energy of known world oil & gas reserves (US Dept Energy)
Technology driving costs down c.f. fossil fuel prices increasing
Attractive to green/ethical funds
Sub-surface Tasks
 Both Conventional & EGS - sustainable water circulation flow rate
 EGS - fracture stimulation to create a large underground reservoir
Slide 7
OD Geothermal Energy Project (100%)
Location (2,899 km2)
Slide 8
OD Geothermal Energy Project
Past Activities
 Blanche No1 well
– Sited 5km from power grid on seismic line
– Drilled, cored & logged to 1,935m
 In-situ stress analysis (CSIRO)
 Temperature measured beneath & around mine
 Well production capability (GeothermEx)
 Confirmed
–
–
–
–
Slide 9
Suitable temperatures in granite host
Extensive volume of homogeneous granite
Large potential resource
Likely horizontal flow direction
OD Geothermal Energy Project
Evaluation & Development Phases
 2008
– Mini hydro-fracture of existing
slim hole well
– Design first of two deep wells
– Drill 1st production well
– Fracture stimulate 1st well

2009
– Drill 2nd production well
– Fracture stimulate 2nd well
– Flow test fractured reservoir
 2011
– 3 to 5 MWe Pilot Power Plant
 2013
– +20 MWe modular plants
Slide 10
OD Geothermal Energy Project
Comparison with other EGS Projects
 Project ownership 
 Site location 
100% by Green Rock Energy Ltd
Next to power demand and transmission grid
 Potential resource Drilled into hot granite and confirmed temperatures
 Establish water circulation
 Water supplies
 Adequate water for flow circulation & cooling
 Infrastructure 
Roxby Downs township and services
 Connection to electricity grid 
 Scaled development

10kms from grid
Immediate access to market
 Experience  Conventional & EGS (above & below ground)
Slide 11
Patchawarra Project (100% interest)
Location (1,483 km2)
Slide 12
Patchawarra Project
Location selection
 Patchawarra Trough, Cooper Basin
 geological formations prospective for hot geothermal water
 Prospective aquifers reach a thickness in excess of 1,200m
 at depths in excess of 3,000m
 To be evaluated and developed in conjunction with the construction of an
electricity distribution network connected to the Cooper Basin
Slide 13
Upper Spencer Gulf Project (100% interest)
Location (1,938 km2)
Slide 14
Upper Spencer Gulf Project
Location Selection
 6 geothermal exploration licenses & two applications
 Early stage of evaluation of the granites for EGS
 Evaluating direct use of geothermal heat source for a
desalination plant
Slide 15
Green Rock Energy Ltd
- Projects
Hungary Geothermal Energy Project
(32% interest)
Slide 16
Hungary Geothermal Energy Project
Why Hungary ?
 Good resource potential
– high regional heat flow
– hot waters intersected in drilling
 Extensive database
 Supportive legislative regime
– attractive feed in tariff pricing
€90 /MWh (c.f. Australia:
A$50/MWh)
– guaranteed access to market
 Member of European Union
 World Bank backed risk
insurance
Slide 17
Hungary Geothermal Energy Project
Joint Venture (32%)
Joint Venturers



MOL - a major Hungarian oil & gas company
Enex hf - a major Icelandic geothermal operating
& consulting company
Green Rock Energy Limited
Scope



Testing of existing hydrocarbon wells or new wells
Generate a pipeline of geothermal projects
>100 MW electricity + direct heat capacity
1st Site drilled

Suspended (usable for direct heat)
Currently selecting 2nd & 3rd sites
Slide 18
Summary








Commercially driven company
A renewable energy that provides continuous energy
Evaluation and development approach minimizes risk
Ability to develop projects in stages
Both Conventional & EGS geothermal projects
In a market that will only get more focus
International geothermal experience
New incentives announced by governments
Slide 19
THANK YOU
Slide 20